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Analog Devices Inc. ADA4891-3WARUZ-R7
- Part No.:
- ADA4891-3WARUZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADA4891-3WARUZ-R7.pdf
- Description:
- IC CMOS 3 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:660
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Product details
Overview
ADA4891-3WARUZ-R7 from Analog Devices is a triple-channel, rail-to-rail output, CMOS high-speed operational amplifier optimized for video, imaging, and active filter applications. It delivers 220 MHz −3 dB bandwidth (G = +1), 170 V/µs slew rate, 28 ns settling to 0.1%, and operates from 2.7 V to 5.5 V single supply. Its integrated power-down pins (PD1–PD3) enable dynamic power management in automotive infotainment and driver assistance systems.
For engineers reviewing the ADA4891-3WARUZ-R7 datasheet, ADA4891-3WARUZ-R7 pinout, ADA4891-3WARUZ-R7 application, or ADA4891-3WARUZ-R7 equivalent, key selection criteria include guaranteed 25 MHz 0.1 dB gain flatness at G = +2, 0.05% differential gain error, −79 dBc SFDR at 1 MHz, and operation across −40°C to +125°C with automotive qualification.
Technical Context
The ADA4891-3WARUZ-R7 implements a fully differential-capable, unity-gain stable voltage-feedback architecture with true single-supply input stage extending 300 mV below the negative rail. Its rail-to-rail output swings within 50 mV of both supply rails under 1 kΩ load, enabling maximum dynamic range in low-voltage video reconstruction and CCD buffer circuits.
Each of its three amplifiers features independent shutdown control via dedicated PDx pins, with 49 ns turn-off time and 166 ns turn-on time at 5 V. The device uses internal biasing to maintain consistent DC performance across temperature and supply voltage, supporting stable operation in coaxial cable drivers and contact image sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 220 MHz at G = +1 (enables HD video signal amplification up to 1080p60) |
| Slew Rate | 170 V/µs (supports fast transient response in active filters and multiplexed imaging paths) |
| Settling Time | 28 ns to 0.1% (ensures accurate pixel-level settling in contact image sensor readout) |
| Supply Range | 2.7 V to 5.5 V (compatible with automotive 3.3 V and 5 V domains without level-shifting) |
| Output Swing | Within 50 mV of rails at 1 kΩ (maximizes SNR in single-supply video reconstruction filters) |
| Power-Down Current | 0.8 mA total for all three amps (reduces system standby power in infotainment head units) |
| Differential Gain Error | 0.05% at NTSC, RL = 150 Ω (meets broadcast-grade video fidelity requirements) |
| Operating Temp | −40°C to +125°C (qualified for under-hood and dashboard-mounted automotive electronics) |
Pinout & Package
The ADA4891-3WARUZ-R7 is housed in a 14-lead TSSOP (RU-14) package with exposed pad for thermal enhancement. Pin 1 is PD1 (power-down control for Amp1); pins 7, 8, and 14 are OUT1, OUT3, and OUT2 respectively; pins 5, 6, 9, 10, 12, and 13 serve as input terminals (±IN1, ±IN2, ±IN3); pins 4 and 11 are −VS and +VS; pins 2 and 3 are PD2 and PD3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PD1) | Power-down enable for Amplifier 1 | Logic-high (>2.4 V) disables Amp1 output; enables ultra-low quiescent current mode |
| 2 (PD2) | Power-down enable for Amplifier 2 | Independent control allows selective channel shutdown in multi-function video processing |
| 3 (PD3) | Power-down enable for Amplifier 3 | Supports dynamic power scaling in camera module auto-exposure or HDR frame sequencing |
| 4 (−VS) | Negative supply rail | Accepts ground or negative voltage; input common-mode extends 0.3 V below this rail |
| 5 (+IN1) | Inverting input of Amplifier 1 | High-impedance (5 GΩ) node for precision signal routing in active filter topologies |
| 6 (−IN1) | Non-inverting input of Amplifier 1 | Low input capacitance (3.2 pF) minimizes phase shift in high-frequency feedback networks |
| 7 (OUT1) | Output of Amplifier 1 | Rail-to-rail swing supports full-scale drive into 150 Ω coaxial loads without clipping |
| 8 (OUT3) | Output of Amplifier 3 | Electrically isolated from OUT1/OUT2 to prevent crosstalk in multi-channel video buffers |
| 9 (+IN2) | Inverting input of Amplifier 2 | Shared layout symmetry with other inputs ensures matched AC performance across channels |
| 10 (+IN3) | Inverting input of Amplifier 3 | Enables identical configuration for triple-channel parallel processing (e.g., RGB video path) |
| 11 (−VS) | Negative supply rail (duplicate) | Provides low-inductance return path; must be connected to minimize ground bounce |
| 12 (−IN2) | Non-inverting input of Amplifier 2 | Validated for DC-coupled photodiode preamp use with <6 µV/°C offset drift |
| 13 (−IN3) | Non-inverting input of Amplifier 3 | Supports high-fidelity signal conditioning in contact image sensor analog front-ends |
| 14 (OUT2) | Output of Amplifier 2 | Capable of sourcing 125 mA at −40 dBc distortion-sufficient for driving dual 75 Ω video lines |
Key Features
| Feature | Design Value |
|---|---|
| Triple-channel integration with independent shutdown | Reduces board space by 60% vs. discrete op-amp solutions while enabling per-channel power gating |
| Automotive qualification (AEC-Q100 Grade 2) | Guarantees reliability in automotive infotainment and ADAS modules operating at 125°C junction temp |
| 25 MHz 0.1 dB gain flatness at G = +2 | Preserves color fidelity and edge sharpness in SD/HD video transmission over 150 Ω loads |
| 170 V/µs slew rate with 220 MHz bandwidth | Enables clean pulse amplification in time-of-flight sensor front-ends and laser driver interfaces |
| Rail-to-rail output swing within 50 mV | Maximizes usable dynamic range in 3.3 V systems-critical for battery-powered portable imagers |
| Low 9 nV/√Hz input voltage noise at 1 MHz | Maintains SNR > 70 dB in photodiode preamplifiers with 10 kΩ transimpedance gain |
Applications
| Automotive Video Signal Conditioning | CCD/CMOS Image Sensor Buffering |
|---|---|
Use Scenario: Amplifying and reconstructing RGB or YUV video signals from rear-view or surround-view cameras before encoding. IC Role / Device Role / Timing Role: Triple-channel video reconstruction filter with independent gain control and DC restoration. Use Value: 0.05% differential gain error and 0.25° phase error ensure broadcast-compliant color reproduction in automotive displays. | Use Scenario: Driving analog outputs of linear CCD arrays or rolling-shutter CMOS sensors in industrial inspection systems. IC Role / Device Role / Timing Role: High-speed, low-noise buffer isolating sensor pixels from PCB trace capacitance and ADC input loading. Use Value: 28 ns settling time guarantees accurate sampling of 10+ MPixel/s line-scan data without ghosting artifacts. |
| Contact Image Sensor (CIS) Interface | Active Filter for Automotive Radar IF Stage |
Use Scenario: Signal conditioning of analog outputs from contact image sensors used in document scanners and biometric readers. IC Role / Device Role / Timing Role: Low-distortion, rail-to-rail output amplifier providing gain and level-shifting for CIS analog chains. Use Value: 125 mA output current drives long flex cables to downstream ADCs while maintaining −79 dBc SFDR at 1 MHz. | Use Scenario: Implementing 2nd- or 3rd-order active low-pass filtering in 77 GHz radar receiver IF paths. IC Role / Device Role / Timing Role: Unity-gain stable, high-bandwidth op-amp configured as Sallen-Key or MFB topology. Use Value: 220 MHz bandwidth and 170 V/µs slew rate support filter cutoffs up to 40 MHz with minimal group delay variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4891-3ARUZ-R7 | Same silicon, standard grade (not automotive qualified); wider input offset voltage range (±10 mV vs. ±2.5 mV typical) | Lacks AEC-Q100 Grade 2 certification; unsuitable for under-hood or safety-critical ADAS functions | Select ADA4891-3WARUZ-R7 when automotive qualification, tighter offset, or extended temperature validation is required. |
| THS3201CDGNR | Single-channel, higher slew rate (4700 V/µs), but no power-down feature and narrower supply range (5 V only) | Not pin-compatible; requires redesign for triple-channel or low-power shutdown functionality | Choose THS3201CDGNR only for ultra-high-speed single-path applications where power gating is unnecessary. |
Compared with ADA4891-3ARUZ-R7, the ADA4891-3WARUZ-R7 provides tighter DC specs and automotive qualification; compared with THS3201CDGNR, it trades raw speed for channel count, power management, and supply flexibility-making it optimal for multi-function automotive video subsystems.
Availability
ADA4891-3WARUZ-R7 is available at Aetrix Electronics and suitable for automotive infotainment systems, driver assistance camera modules, and industrial imaging equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4891-3WARUZ-R7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADA4891 family was designed specifically for cost-sensitive, high-speed signal conditioning in automotive video, consumer imaging, and industrial sensing-emphasizing rail-to-rail operation, low power, and robust temperature performance.
FAQ
What is the operating temperature range for the ADA4891-3WARUZ-R7?
The ADA4891-3WARUZ-R7 is rated for continuous operation from −40°C to +125°C and is AEC-Q100 Grade 2 qualified. This range is validated across all electrical parameters in the datasheet, including bandwidth, slew rate, and power-down timing, making ADA4891-3WARUZ-R7 suitable for engine bay and dashboard-mounted automotive electronics where ambient temperatures exceed 85°C.
Does the ADA4891-3WARUZ-R7 support true single-supply operation?
Yes, the ADA4891-3WARUZ-R7 supports true single-supply operation with an input common-mode voltage range extending 300 mV below the negative rail (−VS − 0.3 V) and rail-to-rail output swing within 50 mV of both supply rails. This enables direct interfacing with sensors and ADCs in 3.3 V or 5 V systems without external level-shifting circuitry-confirmed in the General Description and Electrical Specifications sections of the Rev. F datasheet.
How does the power-down function work on the ADA4891-3WARUZ-R7?
The ADA4891-3WARUZ-R7 features three dedicated power-down pins (PD1, PD2, PD3), one per amplifier. Applying a logic-high voltage (>2.4 V at 5 V supply) to any PDx pin disables that amplifier's output and reduces its quiescent current to 0.8 mA total for all three channels. Turn-off time is 49 ns and turn-on time is 166 ns, enabling rapid channel activation in time-multiplexed imaging or video switching applications using ADA4891-3WARUZ-R7.
Is the ADA4891-3WARUZ-R7 pin-compatible with other members of the ADA4891 family?
No-ADA4891-3WARUZ-R7 uses the 14-lead TSSOP (RU-14) package, while ADA4891-1 and ADA4891-2 use 5-lead SOT-23 or 8-lead SOIC/MSOP packages. Even among triple-channel variants, ADA4891-3ARUZ-R7 shares the same RU-14 footprint and pinout as ADA4891-3WARUZ-R7, but non-W grade parts lack automotive qualification and have looser DC specifications. Always verify mechanical compatibility using the Outline Dimensions section of the datasheet.
What video standards does the ADA4891-3WARUZ-R7 support?
The ADA4891-3WARUZ-R7 is characterized for NTSC video compliance, delivering 0.05% differential gain error and 0.25° differential phase error at G = +2 into 150 Ω loads. Its 25 MHz 0.1 dB gain flatness and −80 dB all-hostile crosstalk meet requirements for SDTV, EDTV, and 720p HDTV signal distribution. While not explicitly tested for PAL or HDMI, its bandwidth and distortion performance support equivalent analog video formats when configured per the Applications Information section of the datasheet.
ADA4891-3WARUZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 3
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 170V/µs
- Gain Bandwidth Product:
- 105 MHz
- -3db Bandwidth:
- 220 MHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 2.5 mV
- Current - Supply:
- 4.4mA (x3 Channels)
- Current - Output / Channel:
- 125 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
ADA4891-3WARUZ-R7 FAQ
1.How can I place an order for ADA4891-3WARUZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4891-3WARUZ-R7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADA4891-3WARUZ-R7 reliable?
The price and inventory of ADA4891-3WARUZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4891-3WARUZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4891-3WARUZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4891-3WARUZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4891-3WARUZ-R7?
ADA4891-3WARUZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4891-3WARUZ-R7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADA4891-3WARUZ-R7?
For technical support, including ADA4891-3WARUZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4891-3WARUZ-R7 requirements.
6.How does Aetrix verify that ADA4891-3WARUZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4891-3WARUZ-R7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADA4891-3WARUZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4891-3WARUZ-R7?
All ADA4891-3WARUZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4891-3WARUZ-R7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADA4891-3WARUZ-R7 part is unused and in its original packaging.
Return procedure for ADA4891-3WARUZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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